Susan Hoi is a unique geological site where 75-million-year-old fossilized shells form natural rock slabs along the beach. This is one of only three such sites in the world, where ancient freshwater snails have transformed into limestone over eons. The rock slabs extend along the coastline and are best visible during low tide. Walking on the ancient formations while watching the sunset creates a surreal experience. The adjacent beach is also pleasant for a quiet swim. A small visitor center explains the geological significance of this natural wonder.